Missing Authentication for Critical Function in ActiveMQ Artemis and Artemis - CVE-2026-27446
Published: March 4, 2026
Vulnerability identifier: #VU123489
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-27446
CWE-ID: CWE-306
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Apache Foundation
Affected software:
ActiveMQ Artemis
Artemis
ActiveMQ Artemis
Artemis
Detailed vulnerability description
The vulnerability allows a remote attacker to bypass authentication.
The vulnerability exists due to missing authentication checks within the Core protocol. A remote non-authenticated attacker can use the Core protocol to force a target broker to establish an outbound Core federation connection to an attacker-controlled rogue broker and inject messages into any queue and/or exfiltrate messages from any queue via the rogue broker.
How to mitigate CVE-2026-27446
Install updates from vendor's website.